ANTIPROTON PRODUCTION IN P+A AND D+A REACTIONS AT SUBTHRESHOLD ENERGIES

被引：8

作者：

CASSING, W ^{[1
]}

LYKASOV, G ^{[1
]}

TEIS, S ^{[1
]}

机构：

[1] JOINT INST NUCL RES,141980 DUBNA,RUSSIA

来源：

ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI | 1994年 / 348卷 / 04期

关键词：

D O I：

10.1007/BF01305878

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The production of antiprotons in proton-nucleus and deuteron-nucleus collisions is analyzed with respect to one-step nucleon-nucleon (NN --> NNppBAR) and secondary DELTA-nucleon (DELTAN --> 4 NNNpBAR) production channels within a phase-space model incorporating the selfenergies of the baryons. It is found that contrary to nucleus-nucleus collisions the DELTA induced reaction channels are of minor importance except at very low bombarding energies. The data from KEK are approximately reproduced when accounting for the internal momentum distribution of the deuteron which provides a natural ''planation for the large enhancement of the pBAR cross section in d + A as compared to p + A.

引用

页码：247 / 248

页数：2

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